package com.webserver.http;

import java.io.IOException;
import java.io.InputStream;
import java.net.Socket;
import java.util.HashMap;
import java.util.Map;

public class HttpServletRequest {
    //请求行相关信息
    private String method;//请求方式
    private String uri;//抽象路径
    private String protocol;//协议版本
//消息头相关信息
    private Map<String,String> headers=new HashMap<>();

    private Socket socket;

    public HttpServletRequest(Socket socket) throws IOException {
        this.socket=socket;
        //1.1解析请求行
        parseRequesLine();
        //1.2解析消息头
        parseHeaders();
        //1.3解析请求行
        parseContent();

    }
    //解析请求行
    private void parseRequesLine() throws IOException {
        String line=readLine();
        System.out.print("请求行内容:"+line);

        String[] data= line.split("\\s");
        method=data[0];
        uri=data[1];
        protocol=data[2];

        System.out.println("method"+method);
        System.out.println("uri"+uri);
        System.out.println("protocol"+protocol);
    }
    //解析消息头
    private void parseHeaders() throws IOException {
        while (true) {
           String line = readLine();
            if (line.isEmpty()){
                break;
            }
            System.out.println("消息头:" + line);
            String[]data=line.split("\\s");
            headers.put(data[0],data[1]);
        }
        System.out.println("headers:"+headers);
    }
    //解析消息正文
    private void parseContent(){}


    private String readLine() throws IOException {
        InputStream in=socket.getInputStream();
        int d;
        StringBuilder builder=new StringBuilder();
        char cur='a',pre='a';
        while ((d=in.read())!=-1){
            cur=(char)d;
            if (pre==13&&cur==10){
                break;
            }
            builder.append(cur);
            pre=cur;

        }
        return builder.toString().trim();
    }

    public String getMethod() {
        return method;
    }

    public String getUri() {
        return uri;
    }

    public String getProtocol(String name) {
        return headers.get(name);
    }
    public String getHeader(String name){
        return headers.get(name);
    }
}
